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                                   CERT-Renater

                        Note d'Information No. 2010/VULN009
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DATE                      : 07/01/2010

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : Opensolaris running hald.

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http://sunsolve.sun.com/search/printfriendly.do?assetkey=1-66-274830-1
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Security Vulnerability May Prevent OpenSolaris "hald" Daemon From
Correctly Writing Audit Records
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Category :                 Security
Release Phase :            Resolved
Bug Id :                   6905945
Product :                  OpenSolaris
Date of Resolved Release : 05-Jan-2010

A security vulnerability in the OpenSolaris hald(1M) daemon ...


1. Impact

A security vulnerability in the OpenSolaris hald(1M) daemon may result
in it not writing audit records when the system is configured to do so.


2. Contributing Factors

This issue can occur in the following releases:
SPARC Platform
  * OpenSolaris based upon builds snv_51 through snv_130

x86 Platform
  * OpenSolaris based upon builds snv_51 through snv_130

Note 1: This issue only affects systems which have Solaris Auditing
enabled (see bsmconv(1M)). To determine if a system has Solaris
Auditing enabled the grep(1) command can be used to search the
'/etc/system' file for a reference to the c2audit kernel module as in
the following example:
         $ grep c2audit /etc/system
         set c2audit:audit_load = 1

Note 2: Solaris 8, 9 and 10 do not include the hald daemon and are
therefore not impacted by this issue.

Note 3: This issue only affects hosts which have the hald daemon
enabled.
To determine if hald daemon is enabled in system, the following
command can be used:
    $ svcs hal
    STATE STIME FMRI
    online 10:08:43 svc:/system/hal:default

Note 4: OpenSolaris distributions may include additional bug fixes
above and beyond the build from which it was derived. To determine the
base build of OpenSolaris, the following command can be used:
         $ uname -v
         snv_86


3. Symptoms

When this issue occurs, audit records related to the hald daemon are
not written to the auditing log. If the "priv_debug" parameter is set
in the /etc/system file at boot time, then a message similar to the
following may appear in the messages file:
     NOTICE: hald: missing privilege "proc_audit" (euid = 0,
     syscall = 186) needed at auditctl+0x58


4. Workaround

There is no workaround for this issue. Please see Resolution section
below.


5. Resolution

This issue is addressed in the following releases:
SPARC Platform
  * OpenSolaris based upon builds snv_131 or later

x86 Platform
  * OpenSolaris based upon builds snv_131 or later

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